Adding & Subtracting Decimals
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Subject Area: Mathematics (B.E.S.T.) | Grade Level: 5
Lesson Length: 15 minutes or less
Keywords/Tags: Adding & Subtracting Decimals
Lesson Description: During this lesson, you will learn how to properly add and subtract decimals.

  • MA.5.NSO.2.3 Add and subtract multi-digit numbers with decimals to the thousandths, including using a standard algorithm with procedural fluency.
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Video : Adding and Subtracting Decimals (How to) | Math with Mr. J
Instructions: Please watch the following video as many times as needed before starting to go through other lesson pages. Understanding the content of the video is very important since the lesson activities will be all about this video content.
Description: Learn how to add and subtract decimals with Mr. J!
Quiz : Adding & Subtracting Decimals
Instructions: Please complete this quiz by choosing the correct answer for each question. You can take this quiz as many times needed.
Question #1

Solve the addtion equation below:

3.59 + 2.67

Question #2

Solve the subtraction equation below: 

9.49 - 2.5 

Question #3
Alex solved the addition equation 8.12 + 1.53. She says that the answer to the equation is 9.65. Is Alex correct? 
Question #4
Matthew solved the subtraction equation 19.12 - 13.06. He got the answer 4.38. Is Matthew correct?
Question #5
9.34 + 1.3 = 10.64
Question #6
8.9 - 1.04 = 7.86
Question #7
34.91 + 1.23 = 35.13
Question #8
Malik says that the correct answer to 12.15 - 1.01 is 13.06. What did he do wrong, and what should the correct answer be? 
Question #9
Cor'mya bought a bag of chips for $1.29, and a coke for $2.25. How much money did she spend? 
Question #10
Ansleigh has a $5.00 bill. She wants to buy a candy bar for $1.79, a lemonade for $2.10, and a hot dog for $2.00. Does Ansleigh have enough money to make the purchase? 
Description: Show me that you know how to add and subtract decimals!
Resources : IXL - Adding & Subtracting Decimals
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson.
IXL Practice Adding and Subtracting Decimals
Go to letter H (Add & Subtract Decimals) > Numbers 2 & 4
Description: For extra practice, you may complete these IXL Adding & Subtracting Decimals Problems.
Resources : Math Play: Adding and Subtracting Decimals Games
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson.
Math Play Adding & Subtracting Decimals Games
Be sure to choose games that practice adding and subtracting decimals!
Description: Be sure to choose games that practice adding and subtracting decimals!
Resources : NUMBEROCK Adding & Subtracting Decimals Song
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson.
Adding & Subtracting Decimals Song | 4th & 5th Grade
Listen to this catchy song to help you remember the steps to adding & subtracting decimals!
Description: Listen to this catchy song to help you remember the steps to adding & subtracting decimals!